linux-kernel - Re: [PATCH v3 2/4] x86/xen: add basic KASAN support for PV kernel

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Message-ID: <1d99ff54-dc81-85a8-0ecb-c3ee4d418f2e@oracle.com>
Date:   Mon, 10 Feb 2020 15:29:26 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Sergey Dyasli <sergey.dyasli@...rix.com>, xen-devel@...ts.xen.org,
        kasan-dev@...glegroups.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        George Dunlap <george.dunlap@...rix.com>,
        Ross Lagerwall <ross.lagerwall@...rix.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v3 2/4] x86/xen: add basic KASAN support for PV kernel



On 2/7/20 9:26 AM, Sergey Dyasli wrote:
> Introduce and use xen_kasan_* functions that are needed to properly
> initialise KASAN for Xen PV domains. Disable instrumentation for files
> that are used by xen_start_kernel() before kasan_early_init() could
> be called.
>
> This enables to use Outline instrumentation for Xen PV kernels.
> KASAN_INLINE and KASAN_VMALLOC options currently lead to boot crashes
> and hence disabled.
>
> Signed-off-by: Sergey Dyasli <sergey.dyasli@...rix.com>

Xen bits:

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>